Heating apparatus.



0. KRATT. HEATING APPARATUS.

APPLICATION FILED sm T. 29, 1913.

Patented May 5, 1914,

CHARLES KRATT, OF GLASGOW, SCOTLAND.

HEATING APPARATUS.

Specification of Letters Patent.

Patented Flay 5, 1314.

Application filed September 2?). 1513. Serial No. 792.303.

To all whom it '7)? (1y col/(1cm Be it known that 1, CHARLES ,litnvrr, a subject of the King of the United Kingdom of Great Britain and Ireland, and residing at- Glasgow, Scotland, have invented a certain newand use'l'ul Improvement in llcai ing Apparatus, oi which the following is a specification.

This invention relates to apparatu for heating liquids electrically including a geyser or the like having an inlet and an outlet. for liquid and containing an electrical resistance (e; g, granules of carbon); and it has for its object to provide in such appa ratus coaeting means for controlling the supply of liquid and the flow of current through the resistance.

In the accompanying drawing Figure 1 is a part vertical section part side elevation showing a general arrangement of apparatus embodying the invention: .Figs. 2 to show in different operative positions details of the means for controlling the supply of liquid and the flow of current' Referring to the drawing, 1 is a manually operable lever secured to the spindle 2 of a valve 3 for controlling the supply oi liouid, the casing ofwhieh valve is connectilie to a liquid supply pipe (not shown) by 7 means of a coupling 4 and also to a container 5. packed with granules ofcarbon or the like afierdmgan electrical resistance, said contamer having an inlet 5 andoutlet 5 for liquid. Coaxial with the boss 6 of. the lever 1 and entering freely in said boss is one end of the actuating spindle 7 of an electric switch 8 which controlsthe flow of current through the carbon resistance. As shown,

' the said switch is of the double-pole type and its blades 12 are rotatable with the spindle 7. The conductors from the switch are shown at 7 and the terminals fittet'l to the container are shown at 7 The spindle,

7 is provided with a radially projecting pin 9 forming one element of a clutch and movable within a sectoral gap 'or interruption 10 formed inthe boss 6 which constitutes the second element of the clutch.

In the operation of the apparatus the le ver 1 is moved in couhter-clockwise direction from the inoperative position shown in Fig. 2 to the position shown in"'-,Fig. 3, so-as to open the valve iiand' permit a supply of cold liquid tq palsythroug'h the container 5. On

continued .niovement of the lever 1 in couna t'a c ll constituting one wall of the gap or interruption 10 engages the pin 9 so that the spindle t is rotated and closes the switch, in consc ptencc of which the electric circuit through the resistance is closed while the valve is fully opened and the liquid flowing through the container is heated to the tepid stage. From the position shown in Fig. the lever 1 may now be moved in clockwise direction to the position shown in Fig. 5 whereby the valve 3 is partially closed without interruption of the circuit, a diminished supply of liquid at an increased temperature being thus obtained. H1811 the lever 1 is in the position shown in Fig. 5, the face 13 constituting another wall oi the gap or interrn iition 10 engages the pin 9, so that on movement of the lever l in clockwise direction to initial or inoperative position, Fig. 2. the spindles 7 and 2 are rotated to open the switch and close the valve, a snapspring. not shown, serving to restore the blades 12 to open position, Fig.

From thetoregoing will be understood that the oscillatory lever 1 constitutes a. valve actuator movable in two stages, and that the clutch device serves to transmit movement of said lever 1 to the spindle of the switch only during the second stage of the oscillatory movement of said lever in either direction, such result being obtained by reason that the walls of the gap 10 are spaced apart a distance exceeding the width of the-projecting pin 9.

An indicator plate may be provided to indicate the positions into which the lever should be moved according as cold water,

tepid water or hot water is wanted.

lVhat I claim is 1. In combination with a valve for controlling the flow of liquid, an oscillatory lever movable in two stages for actuating said valve, :1 switch device for controlling the How of electric current for heating the liqin testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES KRATT. Witnesses VVALLAGE CRANS'ION FAIRWEATI-IER, HENRY MASON. 

